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06-04-2020
Mathematics

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Nhich expression is the factorization of x2 + 10x + 21?
(X+3)(x + 7)
(X + 4)(X+6)
(X+6)(X + 15)
(X+ 7)(X + 14)

Respuesta :

10-04-2020

Answer:

[tex] {x}^{2} + 10x + 21 \\ {x}^{2} + 7x + 3x + 21 \\ x(x + 7) + 3(x + 7) \\ = (x + 3)(x +7 ) [/tex]

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